Contents
Features .............................................................. 1
Block Diagram ..................................................... 1
Pin Assignment ................................................... 1
Absolute Maximum Ratings ................................. 2
Electrical characteristics ...................................... 2
Definition of Terms .............................................. 3
Load conditions ................................................... 4
Typical performance characteristics .................... 5
Dimensions.......................................................... 7
Rev.1.1
LOW-VOLTAGE C-MOS
HIGH-PRECISION TEMPERATURE SENSOR IC
S-8120ANP
The S-8120AMP is a ultra-small packaged high-precision temperature
sensor IC that outputs voltage with a temperature coefficient of 8.5mV/°C and a temperature accuracy of ±2.5°C. A temperature
sensor, a constant current circuit and an operational amplifier are
integrated on a single chip to be able to operate at 2.4V. The operating
temperature ranges from -40°C to +100°C. The S-8120AMP is superior
in linearity over conventional temperature sensors like thermistors. It
can be applied to an ever expanding wide range of applications that
call for high-precision thermal control.
n Features
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n Block Diagram
Temperature accuracy : ±2.5°C ( -30°C ∼ +100°C)
Linear Output Voltage : -8.5mV/°C
Ta = - 30°C : 1.823 V typ.
Ta = +30°C : 1.326 V typ.
Ta = + 100°C : 0.718 V typ.
Nonlinearity : ±0.5 % typ. ( -20°C ∼ +80°C )
Vss standard output
Low voltage operation : Vdd min. = 2.4 V
Low current consumption : Idd typ. = 4.5µA (+25°C)
Ultra-small plastic package ( SC-82AB )
1
Vdd
4
Vout
3
N.C.
2
Vss
+
−
Temperature sensor
n Pin Assignment
SC-82AB
4
3
1. Vdd
2. Vss
3. N.C.
1
2
4. Vout
( Top view )
Seiko Instruments Inc.
1
S-8120ANP ver.1.1
LOW-VOLTAGE C-MOS HIGH-PRECISION TEMPERATURE SENSOR IC
S-8120ANP
n
Absolute Maximum Ratings
Item
Power supply Voltage
(Vss=0.0V)
Output voltage
Operating temperature
Storage temperature
n
Symbol
Vdd
Ratings
6.5
Vout
Topr
Tstg
Vss ∼ Vdd
-40 ∼ +100
-55 ∼ +125
Unit
V
V
°C
°C
Electrical characteristics
Item
Power supply Voltage
(Vss=0.0V)
Symbol
Vdd
Output voltage
Vout
Temperature sensitivity
Nonlinearity
Operating temperature
Current consumption
Vse
NL
Topr
Idd
Condition
Ta = - 30°C
Ta = + 30°C
Ta = + 100°C
- 30≤ Ta ≤ + 100°C
- 20≤ Ta ≤ + 80°C
Ta = + 25°C
Seiko Instruments Inc.
Min.
2.4
1.802
1.305
0.697
- 8.78
- 40
( 40°C≤Ta≤+100°C,Vdd=5V)
Typ.
Max.
Unit
6.0
V
1.823
1.326
0.718
- 8.50
±0.5
4.5
1.844
1.347
0.739
- 8.22
+ 100
10.0
V
V
V
mV/°C
%
V
µA
2
S-8120ANP ver.1.1
LOW-VOLTAGE C-MOS HIGH-PRECISION TEMPERATURE SENSOR
S-8120ANP
n
Definition of terms
1. Output voltage ( Vout )
Output voltage Vout
Output voltage Vout is defined as the voltage
between measured pin-4 and Vss.
Vout is linearly proportional to ambient
temperature.
S-8120AMP is tested for Vout at -30°C,+30°C
and +100°C.
max.
min.
-30°C
0°C
+100°C
+30°C
Ambient temperature Ta
2. Temperature sensitivity ( Vse )
Temperature sensitivity Vse is defined as the
average slope of the Vout versus Ta curve using
the following formula.
Output voltage Vout
Vout(-30)
{Vout ( + 100 ) − Vout ( − 30 )}
Vse =
130
slope : Temperature sensitivity
Vout(+100) : Output voltage at Ta=+100°C
Vout( - 30) : Output voltage at Ta= - 30°C
Vout(+100)
0°C
-30°C
+100°C
+30°
Ambient temperature Ta
3. Nonlinearity
NL
Output voltage Vout
Nonlinearity NL is defined as the deviation
of the Vout versus Ta curve from the best-fit
straight line over the device’s rated temperature
range.
∆ NL =
a
Vout(-20)
Vout vs. Ta curve
a
b
a
~100
b
a
Best-fit
straight line
Vout(+80)
a : The maximum deviation of the Vout vs.
Ta curve from the best-fit straight line
between - 20°C and +80°C.
b : The difference of the output voltage
between - 20°C and +80°C.
-20°C 0°C
+80°C
Ambient temperature Ta
Seiko Instruments Inc.
3
S-8120ANP ver.1.1
LOW-VOLTAGE C-MOS HIGH-PRECISION TEMPERATURE SENSOR
S-8120ANP
n
Load conditions
Load capacitance : CL ≤ 100pF
Load resistance : RL ≥ 500kΩ
(Note : Do NOT connect a pull-up resistor to Vout pin.)
CL≤100pF
pin-4
RL≥500kΩ
S-8120ANP
Vout
Seiko Instruments Inc.
CL
RL
4
S-8120ANP ver.1.1
LOW-VOLTAGE C-MOS HIGH-PRECISION TEMPERATURE SENSOR
S-8120ANP
n Typical performance characteristics
Ambient temperature (Ta) - Output voltage (Vout)
Accuracy - Temperature
2000
TYP
MIN
MAX
1800
1600
Output
Voltage
Vout [mV] 1400
Ambient
Temperature
Ta’ - Ta [°C]
1200
1000
800
600
-40
-20
0
20
40
60
Temperature Ta [°C]
80
100
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-40
-20
0
20
40
60
80
100
Ambient temperature Ta [°C]
Ambient Temperature (Ta) - Current consumption (Idd typ.)
Typical heat response from 25°C air into 100°C air
10
1400
9
1300
8
Current
consumption
Idd[µA]
TYP
MAX
MIN
1200
7
Output
1100
Voltage
Vout [mV] 1000
6
5
4
900
3
800
2
700
1
0
-40
600
-20
0
20
40
60
80
Ambient temperature Ta [°C]
100
0
Power supply voltage (Vdd) - Output voltage (Vout typ.)
30
60
90
Time [sec]
120
150
180
Power supply voltage (Vdd) - Output voltage (Vout typ.)
1342
1915
Ta=+30°C
Ta=-40°C
1341
1914
1913
Output
Voltage
Vout [mV]
Output
Voltage
Vout [mV]
1340
1912
1339
1911
1338
1910
1337
2
3
4
5
Power supply voltage Vdd [V]
6
2
Power supply voltage (Vdd) - Output voltage (Vout typ.)
3
4
5
Power supply voltage Vdd [V]
[‚u]
6
Power supply voltage (Vdd) - Current consumption (Idd typ.)
734
10
Ta=+100°C
Ta=+30°C
9
733
8
7
Output
Voltage
Vout [mV]
732
Output
Voltage
Vout [mV]
731
6
5
4
3
730
2
1
729
2
3
4
5
Power supply voltage Vdd [V]
6
0
2
Seiko Instruments Inc.
3
4
5
Power supply voltage Vdd [V]
6
5
S-8120ANP ver.1.1
LOW-VOLTAGE C-MOS HIGH-PRECISION TEMPERATURE SENSOR
S-8120ANP
Start up response
Ta=25°C,CL=100pF, RL=10MΩ
Vdd
2V/div
( = 6V )
GND
Vout
1V/div
GND
50µ sec/div
Ta=25°C,CL=100pF, RL=10MΩ
Vdd
2V/div
( = 2.4V )
GND
Vout
1V/div
GND
50µ sec/div
Seiko Instruments Inc.
6
NP004-A 990531
SC-82AB
Unit:mm
Dimensions
1.3±0.2
4
0.15
3
1.25 2.1±0.3
0.05
0.16
2
1
0.9±0.1
1.1max
0.4
0.3
0∼0.1
Taping Specifications
+0.1
1.5 -0.05
2.0±0.05
4.0±0.1
+0.1
-0.06
Reel Specifications
1 reel holds 3000 ICs.
1.75±0.1
4.0±0.1
12.5max.
1.1±0.1
0.2±0.05
+0
φ180 -3
3.5±0.1
8.0±0.2
(2.0) 2.6±0.2
+1
φ60 -0
1.05±0.1
9.0±0.3
Winding core
21±0.5
φ13±0.2
T2 type
2±0.2
(60°)
Feed direction
(60°)
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The information herein is subject to change without notice.
Seiko Instruments Inc. is not responsible for any problems caused by circuits or other diagrams
described herein whose industrial properties, patents or other rights belong to third parties. The
application circuit examples explain typical applications of the products, and do not guarantee any
mass-production design.
When the products described herein include Strategic Products (or Service) subject to regulations,
they should not be exported without authorization from the appropriate governmental authorities.
The products described herein cannot be used as part of any device or equipment which influences
the human body, such as physical exercise equipment, medical equipment, security system, gas
equipment, vehicle or airplane, without prior written permission of Seiko Instruments Inc.